Is CVE-2018-21146 in the CISA KEV catalog?

No. CVE-2018-21146 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-21146?

CVE-2018-21146 has a CVSS v3 base score of 6.8 (MEDIUM).

What is the EPSS score for CVE-2018-21146?

CVE-2018-21146 has an EPSS score of 0.85% (54th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-21146?

Upgrade d7800 firmware to 1.0.1.34 or later. Fixes are available for 6 affected products.

CVE & CISA-KEV Catalog

CVE-2018-21146

MEDIUM

6.8

CVSS v3

NVD

Description

Certain NETGEAR devices are affected by command injection by an authenticated user. This affects D7800 before 1.0.1.34, R7800 before 1.0.2.42, R8900 before 1.0.3.10, R9000 before 1.0.3.10, WNDR4300v2 before 1.0.0.54, and WNDR4500v3 before 1.0.0.54.

CWE-74Injection

How to fix

Remediation Available

d7800 firmwareNVD

Affected:< 1.0.1.34Fixed in:1.0.1.34CVE-2018-21146derived from NVD

r7800 firmwareNVD

Affected:< 1.0.2.42Fixed in:1.0.2.42CVE-2018-21146derived from NVD

r8900 firmwareNVD

Affected:< 1.0.3.10Fixed in:1.0.3.10CVE-2018-21146derived from NVD

r9000 firmwareNVD

Affected:< 1.0.3.10Fixed in:1.0.3.10CVE-2018-21146derived from NVD

wndr4300 firmwareNVD

Affected:< 1.0.0.54Fixed in:1.0.0.54CVE-2018-21146derived from NVD

wndr4500 firmwareNVD

Affected:< 1.0.0.54Fixed in:1.0.0.54CVE-2018-21146derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorAdjacent

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

0.85%probability of exploitation in 30 days

54thpercentile

Moderate risk: more likely to be exploited than 54% of all known CVEs.

References

Vendor Advisory1

kb.netgear.com

Related Vulnerabilities

Other CWE-74 (Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2013-2251	Critical	9.8	100%	KEV	Fix
CVE-2023-22527	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2019-2725	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2022-46169	Critical	9.8	100%	KEV	Fix
CVE-2022-35914	Critical	9.8	100%	KEV	-
CVE-2019-17558	High	7.5	99%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.